add -i, send-email, svn, p4, etc: use "git var GIT_EDITOR"

[git] / t / t4013 / diff.log_-SF_master

$ git log -SF master
commit 9a6d4949b6b76956d9d5e26f2791ec2ceff5fdc0
Author: A U Thor <author@example.com>
Date:   Mon Jun 26 00:02:00 2006 +0000

    Third
$